Fuse box and method of making same



. w..D. KYLE FUSE BOX AND METHOD OF MAKIG SAME? Oct. 20; 1925- Wlham REQ/1E# 495,91'

Patented Oct. 20, 19.25.

UNITED STATES Y 1,557,707. PATENT OFFICE.

WILLIAM D. KYLE, F MILWAUKEE, WISCONSIN, ASSIGNOR T0 LINE MATERIALy COM- PANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OE WISCONSIN.

FUSE BOX AND METHOD OF MAKING SAME.

Application led June 6, 1924. Serial No. 718,355.A

To all whom it may concern.'

Be it known that, I, WILLIAM D. KYLE,

l a citizen of the United States, and resident formed of V as dry process porcelain.

of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Fuse Boxes and Methods of Making Same, of which the following is a description, referencebeing had to the accompanying drawing, which. is al part of this specification'.

f This invention relates to certain new and useful improvements in fuse boxes and method of making same.

It is highly desirable that fuse boxes of the type employed for handling highvoltagecurrent be made of non-conducting material. Boxes of this character have been porcelain and as they are of necessity of irregular shape it has been necessary to employ what is known in the art Experience has proven that dry process porcelain is unreliable in that, after the device has been put into service, the current oftentimes leaks through thebox to the cross-arm or other support, especiall when a high voltage current is handled. his objection is not found in the higher rades of non-conducting material such asv akelite, glass, or other materials, and it has been impossible to construct the boxes 4of wet process porcelain,

as-wet process porcelain can only be formed age ofA current through the box to the supi port. l t i Anotherv object of this inventlon res1des 1n the provision of a boxxin which the bodyl portion is formed of dry process porcelain having one or more 'openings or recesses in which wet process porcelain, contact carry-' ing members are. permanently secured either`Vv before or after firinggto afford positive protection against the vleakage o f-the current through the box irrespective of the type of current being handled.

It isa still further object of this invention to provide a fuse box of the character described and a method of making the same struction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the hereindisclosed,invention may be made as` come within the scope of the claims.

Inl` the accompanying drawing, I have i1- lustrated complete examples of the physical embodiment of my invention constructed according to the best modes I have so far devised for the practical application of the principles thereof, and in which:

Figure 1 is a view, partly in side elevation andl partly in section, illustrating a fuse box embodying my invention;

Figure 2 is a front elevational view thereof with the cover removed;

Figure 3 is a perspective view of one of the high voltage, contact carrying members;

Figure 4 is a fragmentary sectional view taken throu h the lower .portion of a fuse box embodying a slightly modified form of this invention, and y Figure 5 is a view similar to vFigure 4 of still another modification of mv invention.

Referring now moreparticularly' to the accompanying drawing, in which like numerals designate like parts throughout the several views; thelnumeral 5 designates a devicevor housing member having a bottom wall or base 6 towhich is secured an attaching bracket member 47 -adaptedto be fastened to a cross-arm or other supporting member 8 in any-desired manner;

Y The box 5 is closed by a cover member 9 to the inner face ofwhich is secured a renewable fuse member 10 providing a mov! able contact having cont-act surfaces 11 and 12.'l The cover 9 is hingedly `connected to l the box by trunnions or pivots 13 carried by 'the fuse member and pivotally engaged in support. As is well known in the art, wet v against the leaka .the Contact surfaces lland 12 of the fuse member 10 with vstationary contact members 17 and 18, respectively, mounted in the box,

in the manner hereinafter described. The conductor 19 of the service line in which the device is included is broken and the ends thereof connected with terminals 26 in electrical connection with the conductors 17 and 18 as depicted in Figure 2. l

ZIhe box l5, being of necessity of irregular shape and, consequently, incapable of being formed by turning on a lathe or other similar machine, cannot be formed of wet process porcelain, but must be made of dry prcessporcelain. Y As a result, the boxes are of little, if any, use when high voltage current is being. handled, as the current leaks through the box 5 to the cross-arm or other process porcelain affords positive protection e of current therethrough, irrespective of't e voltage being handled, and, it being possible to only make articles 0f wet process porcelain havin such shapes -terminals 26 in position.`

' like.

as to permit their belng forme by turning, prevents the construction of the box 5 of this type of material.

n the invention illustration in the drawing, the leakage of current through the box 5 is prevented by providing the base 6 with cylindrimembers 21 cal plugsorcontact lcarrying formed of wet process porcelain are inserted.

The stationary contacts 17 and 18 are mounted on the members 21 by bolts or screw mem' bers 22 secured in the bores 23 thereof by cement or other material 24, a binding nut 25 clamping the stationary contacts and the With this tonstruction the members 21 provide means insulating the contacts from the fuse box, which is also constructed of non-conducting material. v v

The contact carrying members 21 may be secured in the baseeither before or after the tiring ofthe box, and in thevevent box 5 is Ifirst fired,v the plugs 21 are separately fired andsecured in the -recesses 2O by ce ment 27, or other means such as leador the The contact members 21, however, may be inserted in the recesses 20 before the box and the Contact carryingmembers have been tired, after which the' box and contact carrying members are fired, resulting in a fusion therebetween to thus permanently secure the plugs 21 in position, see Figure 4. The box 5 with the plugs inserted may then be glazed to give the appearance of the plugs21 being in ral with the box.

The plugs21 pre erably have their outer ends extended beyond the face of the base 6 to space the contact members and the terminals from the dry process porcelain body. rIhe plugs 21 may also extend entirely through the base 6 of the box 5v as illustrated in Figure 5.

In the foregoing' description the plugs 21 have been referred to as formed of wet process porcelain and itis understood that the plugs may be formed .of b-akelite, glass, or

any 'other material capable of affording thef desired .insulation against *high` voltage.

With this structure, it will be-readily obvious that all. the benefits of a wet process porcelain, bakelite, glass, or other high type of insulating material fuse box are obtained and vthe leakage of current through the box protected against.

What 'I claim as my invention is:

v 1. A device of the character described, comprising a body portion of insulating material, and a contact carrying member capable of insulating high voltage secured in the body portion.

2. A fusecut-out-box, comprising a body portion, and a wet process porcelain contact carrying member secured in the body -portion.

3. A device of the character described, comprising a body portion having a recess therein, and a high voltage insulating contact carrying member secured int the body' vportion recess.

4. A fuse cut-out box, comprising a body portion having a recess therein, and a wet process porcelain contact carrying member secured in the body` portion recess.

5, A fuse cut-out box, comprising` a dry process porcelain box member having a recess formed therein, and a wet process porcelain contact lcarrying member rigidly secured inthe body portion recess.

6. A device of the `character described, comprising a box member having s aced openings in one wallthereof, a cylin rical contact carrying member capable of resist ing high-voltage rigidly set in` each box member opening, a stationary contact member carried by each contact carrying memher, and a movable contact adapted to bridge the stationary contact members.

7. A device of the character described,

comprising a dry process porcelain boxmember having spaced openings in one wall thereof, a cylindrical wet process porcelain contact carrying member rigidly set in each box member openlng, a stationary contact member carried .by each contact carrying member, and a movable contact adapted toy celain, and in setting the wet p rocess porce-l lain member in the dry process porcelain member.

9-. The hereindescribed method of forming boxes for housing electrical appliances, which consists in forming a housing member of dry process porcelain, in setting the Wet process porcelain member in an aperture in the dry process porcelain member, and in permanently fixing the wet process porcelain member in the aperture of the dry process porcelain member.

l0. The hereindescribed method of forming boxes for housing electrical appliances,

which consists in forming a housing member oi' dry process porcelain, 1n forming a contact carrying member of Wet process porcelain, in setting the Wet process porcelain member in an aperture in the dryprocess porcelain member, and in liring the porcelain members to permanently set the Wet v process porcelain member in the dry process porcelain member and substantially fuse said members together.

12.v The hereindescribed method of form` ing a mounting for electrical appliances, Whlch .conslsts 1n 'forming a base member of insulating material, in forming a mounting v member of insulating material independently of the base member, andv in setting the mounting member in the base member.

13. The hereindescribed method of forming ,a mounting for electrical appliances, which consists in forming a base member of insulating material capable of resisting the passage of low voltage current therethrough but incapable of efficiently -resisting the passage of high voltage current therethrough, informing a mounting member of insulating material capable of resisting the passage therethrough of highvoltage current, and in xing the mounting member to the b-ase member.

v14. A device of the character described, comprising a base member capable ofl insulating low voltage currents but incapable of eiliciently insulating high voltage currents,

a mounting member capable of insulating high voltage currents, and means securlng the mounting member to the base member.

Tn testimony whereof I aix my signature.v

WILLIAM D. KYLE. 

